The issue for sailboats and powerboats with masts is must I've a tricolor mild over the masthead or have different port, starboard and stern lights mounted to the deck.There are actually advantages and drawbacks to equally just one light and 3 individual lights. Some boats have the two by using a sliding switch that allows you to select the tricolor or perhaps the deck lights. In this manner if you would like the assortment and visibility in waves utilize the tricolor and when you do have a difficulty along with the tricolor you may swap again. This redundancy is usually a safety issue.